#include<stdio.h>
int main()
{
	int c,s;
	float p,w,d,f;
	printf("Please enter price,weight,discount:");
	scanf("%f,%f,%d",&p,&w,&s);
	if(s>=3000)
	{c=12;} 
	else
	{c=s/250;} 
	switch(c)
	{
		case 0:d=0;break;
		case 1:d=1;break;
		case 2:
		case 3:d=5;break;
		case 4:
		case 5:
		case 6:
		case 7:d=8;break;
		case 8:
		case 9:
		case 10:
		case 11:d=10;break;
		case 12:d=11;break; 
	}
	f=p*w*s*(1-d/100);
	printf("freight=%10.2f\n",f);
	return 0;
 } 
